Equipped for oversized 31. 8 millimeter bars, the Syntace Force 109 stem features 3D forged aluminum alloy construction for the utmost in strength and security. Its thicker stem tube boosts stiffness and strength, with its oversized diameter continuing to the clamp area. Titanium bolts shave off precious grams, while the 200 degree handlebar bed reduces bar flex compared to stems with traditional 180 degree options. Ultimately, this allows your oversized handlebar to sit deeper and more secure, decreasing bar fatigue and flex over time.